“In many species, older males are often preferred mates because they carry “good” genes that account for their viability. In some animals, including mice, which rely heavily on chemical communication, there is some indication that an animal’s age can be determined by its scent. In order to identify the attractants in aged male mouse urine, chemical and behavioral studies were performed. Read More
Scent Recognition of Infected Status in Humans.
“Introduction. There is a body of experimental evidence that mice and rats use chemical signals to avoid sexual contact with infected conspecifics. In contrast to animals, body scent of sick humans is employed only in medical diagnostics. A modification of human body odor, due to an infection, has not been studied as a potential signal for choice of a sexual partner. It might, however, be especially important for sexually transmitted infections (STI) because many such infections have no obvious external manifestations. Aim. In this study, we have investigated odor pleasantness of young men infected with gonorrhea, Neisseria gonorrhoeae. Methods. We collected armpit sweat and saliva from young men (17-25 years old) belonging to three groups: healthy persons (N = 16), young men infected with gonorrhea, Neisseria gonorrhoeae (N = 13), and persons recovered due to specific therapy (N = 5). The sweat samples odor was then assessed by healthy young women (17-20 years old). Read More
“Ever since smoking was prohibited in restaurants, bars, and clubs, undesirable smells that were previously masked by cigarette smoke became noticeable. This opens up opportunities to improve the dance club environment by introducing pleasant ambient scents that mask the unwanted odors and to allow competing clubs to differentiate themselves. Read More
“Introduction: When ecological cues for pathogen threat are salient, cognitive and motivational systems appear to encourage myriad pathogen-avoidance behaviors (Ackerman et al., 2009; Faulkner, Schaller, Park, & Duncan, 2004; Mortensen, Becker, Ackerman, Neuberg, & Kenrick, 2010). Operating from the presumption that fundamental motivations to avoid pathogens can influence prophylactic behaviors, we aimed to test a novel hypothesis related to condom use: that ecological cues for the presence of pathogens would increase intentions to use condoms…
Method: At the beginning of the experimental session, an experimenter informed participants that pipes in the building were sporadically emitting unpleasant odors because of plumbing issues. Participants were then asked to leave the study room to drink at a nearby water fountain in preparation for providing a saliva sample. After returning, they completed a series of questionnaires on a laptop. … In the pathogen-prime condition, while participants were out of the room, the experimenter sprayed the wall of the room with a single pump of “Liquid ASS,” a novelty odor liquid that smells strongly of common bacterial threats (e.g., feces). In the control condition, the experimenter did not administer the spray. After returning from getting water, participants reported their intentions to purchase and use condoms over the next 6 months. Participants were asked to use a scale from 1 (not at all likely) to 7 (extremely likely) to rate the likelihood of their buying condoms, carrying condoms, discussing condoms with a sex partner, and using condoms during every event of sexual intercourse….
Results: An independent-samples t test demonstrated that participants in the pathogen-prime condition reported greater intentions to use condoms (M = 4.48, SD = 1.70) than did participants in the control condition (M = 3.74, SD = 1.85), t(97) = 2.06, p < .05, d = 0.42. The effect was identical across individuals who had and had not had sexual intercourse in the past year, F(1, 95) = 0.13, p = .72, and persisted after controlling for gender, SOI-R, and baseline condom attitudes, norms, and self-efficacy, t(92) = 2.03, p < .05, semipartial r = .17 (see Table 1).”
Discoblog: NCBI ROFL: Disgusting smells cause decreased liking of gay men.
Discoblog: NCBI ROFL: Smelly Week: The science of “the stinkface”.
Discoblog: NCBI ROFL: I’m a lumberjack, and I’m OK, I smell like pine and get chicks all day!
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“The effect of milk and milk components on the deodorization of diallyl disulfide (DADS), allyl methyl disulfide (AMDS), allyl mercaptan (AM), allyl methyl sulfide (AMS), and methyl mercaptan (MM) in the headspace of garlic as well as in the mouth- and nose-space after garlic ingestion was investigated using selected ion flow tube-mass spectrometry (SIFT-MS). Read More
“We examined the effects of the odors from mother’s milk, other mother’s milk and formula milk on pain responses in newborns undergoing routine heelsticks. Forty-eight healthy infants were assigned to four groups, an own mother’s breast milk odor group (Own MM), another mother’s breast milk odor group (Other MM), a formula milk odor group (Formula M) and a control group. Read More
“An induction of disgust can lead to more negative attitudes toward an entire social group: Participants who were exposed to a noxious ambient odor reported less warmth toward gay men. Read More
“Male sweat smells disgusting to many adults, but it is unclear whether children find it so. In Experiment 1A, children (mean age = 8.7 years) and adolescents (M=16.6 years) smelled male sweat and other odors, rated each for liking, and attempted their identification. Read More
“Parasite loads of animals vary among individuals, but the underlying mechanisms have not been fully identified. Here, we investigated whether health status of hedgehogs (Erinaceus europaeus) is correlated with tick burden, and whether chemical cues linked to the health status of the host mediate attraction of the tick Ixodes hexagonus. An ecological survey conducted over 10 years, involving 226 wild hedgehogs, revealed a strong association between health status and tick burden of hedgehogs, with healthy animals being less likely to carry ticks than unhealthy ones. Behavioral choice tests demonstrated that ticks display a preference for the fecal odor from sick hedgehogs compared with healthy ones. Chemical analysis of fecal odors using gas chromatography – mass spectrometry showed differences in the odor profile between sick and healthy hedgehogs. Read More
“This paper describes a methodology for measuring and assessing changes in canine oral malodor with the intent that it can be used to evaluate products designed to make pets’ breath more acceptable to their owners. Ten judges, able to discriminate and rank malodorous chemical compounds, were trained as a formal sensory panel by an expert in sensory evaluation techniques. Read More